Mark Dubberstein serves as Executive at Bronco Drilling Company, Inc., where they oversee executive responsibilities. Since joining the company, Mark Dubberstein has executed 118 insider transactions totaling $2.1M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 3, 2008 involved selling 8 shares valued at $121.
Mark Dubberstein currently holds 289,749 shares of Bronco Drilling Company, Inc. (BRNC), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Mark Dubberstein has been a net seller of BRNC stock. They have purchased $0 and sold $2.1M worth of shares.
Mark Dubberstein's most recent insider trade was on Jan 3, 2008, when they sold 8 shares at $15.15 per share.
Get notified when new Form 4 filings are submitted
| $15.14 |
| Discretionary |
| Jan 3, 2008 | BRNC | $287 | Sale | 19 | $15.12 | Discretionary |
| Jan 3, 2008 | BRNC | $2.1K | Sale | 138 | $15.11 | Discretionary |
| Jan 3, 2008 | BRNC | $5.0K | Sale | 333 | $15.10 | Discretionary |
| Jan 3, 2008 | BRNC | $4.7K | Sale | 313 | $15.08 | Discretionary |
| Jan 3, 2008 | BRNC | $2.0K | Sale | 136 | $15.07 | Discretionary |
| Jan 3, 2008 | BRNC | $3.0K | Sale | 196 | $15.06 | Discretionary |
| Jan 3, 2008 | BRNC | $1.8K | Sale | 118 | $15.05 | Discretionary |
| Jan 3, 2008 | BRNC | $2.1K | Sale | 139 | $15.04 | Discretionary |
| Jan 2, 2008 | BRNC | $14.8K | Sale | 977 | $15.16 | Discretionary |
| Jan 2, 2008 | BRNC | $9.1K | Sale | 600 | $15.15 | Discretionary |
| Jan 2, 2008 | BRNC | $7.6K | Sale | 500 | $15.12 | Discretionary |
| Jan 2, 2008 | BRNC | $27.2K | Sale | 1,800 | $15.11 | Discretionary |
| Jan 2, 2008 | BRNC | $7.5K | Sale | 500 | $15.09 | Discretionary |
| Jan 2, 2008 | BRNC | $7.5K | Sale | 500 | $15.06 | Discretionary |
| Jan 2, 2008 | BRNC | $7.5K | Sale | 500 | $15.04 | Discretionary |
| Jan 2, 2008 | BRNC | $3.0K | Sale | 200 | $15.03 | Discretionary |
| Jan 2, 2008 | BRNC | $13.5K | Sale | 900 | $15.02 | Discretionary |
| Jan 2, 2008 | BRNC | $3.0K | Sale | 200 | $15.00 | Discretionary |
| Jan 2, 2008 | BRNC | $10.5K | Sale | 700 | $15.01 | Discretionary |
| Jan 2, 2008 | BRNC | $14.5K | Sale | 956 | $15.14 | Discretionary |
| Jan 2, 2008 | BRNC | $3.2K | Sale | 211 | $15.33 | Discretionary |
| Jan 2, 2008 | BRNC | $291 | Sale | 19 | $15.32 | Discretionary |
| Jan 2, 2008 | BRNC | $306 | Sale | 20 | $15.31 | Discretionary |
| Jan 2, 2008 | BRNC | $6.0K | Sale | 392 | $15.30 | Discretionary |
| Jan 2, 2008 | BRNC | $3.0K | Sale | 196 | $15.28 | Discretionary |
| Jan 2, 2008 | BRNC | $3.0K | Sale | 196 | $15.27 | Discretionary |
| Jan 2, 2008 | BRNC | $6.9K | Sale | 451 | $15.26 | Discretionary |
| Jan 2, 2008 | BRNC | $5.1K | Sale | 333 | $15.25 | Discretionary |